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(No Model.) 2 SheetsSheet 1.

J. F. DUSTIN.

BOX MOTION OPERATING DEVICE FOR LOOMS.

No. 594,685- Patented Nov. 30, 1897.

Witnesses. Inventor.

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Attorneya (No Model.) 2 Sheets-Sheet 2.

J. F. DUSTIN. BOX MOTION OPERATING DEVICE FOR LOOMS. 4

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lflIIlIIIIIIIl/I mlmw UNITED STATES PATENT OFFICE.

JOHN F. DUSTIN, OF FITCHBURG, MASSACHUSETTS, ASSIGNOR TO HIMSELF AND THEPARKHILL MANUFACTURING COMPANY, OF SAME PLACE.

BOX-MOTION-OPERATING'DEVICEFOR LOOMS.

SPECIFICATION forming part of Letters Patent No. 594,685, dated November30, 1897.

Application filed J lly 29, 1897. Serial No. 646,329. (No model.)

To aZZ whom it may concern:

Be it known that-I, JOHN F. DUSTIN, a citizen of the United States,residing at Fitchburg, in the county of Worcester and State ofMassachusetts, have invented a new and useful Improvement inBox-Motion-Operating Devices for Looms, of which the following is aspecification.

The objects of my invention are, first, to

Io provide a simple, compact, and efficient boxmotion-operating devicefor looms, and in the second place to arrange the pattern devices orchains which control the harnesses and boX motion of a loom,respectively, so that I 5 said pattern devices or chains will movetogether, so that when one chain is advanced or moved back the secondchain will be correspondingly shifted.

To these ends my invention consists of the parts and combinations ofparts, as hereinafter described, and more particularly pointed out inthe claim at the end of this specification.

In the accompanying two sheets of draw- 2 ings, Figure 1 is an end viewof a loom, sufficient parts thereof being shown to illustrate theapplication of my invention. Fig. 2 is a detail sectional view to behereinafter referred to. Fig. 3 is a front view of a boxmotion-operatingdevice constructed according to my invention, and Fig. 4 is afragmentary view showing the parts in a different relative position.

The ordinary forms of dobby-looms now 3 5 usually employed incotton-weaving embody two'distinct pattern mechanisms. One patternmechanism, through a harness-motion, controls the position of thewarp-threads, and the other pattern mechanism is arranged to 40 controlthe box-motion which governs the weft or filling threads. These twopattern mechanisms which control the warp-threads and the weft orfilling threads, respectively, have heretofore ordinarily beenindependently mounted, so that either of them could be advanced orturned back without affecting the other.

The pattern which is produced in a fabric Woven by a loom depends upon acorrect joint action of the two pattern mechanisms which control thewarp-threads and the weft-threads, respectively.

In ordinary constructions it has heretofore been necessary for theoperator or weaver to independently adjust the two pattern mechanismsand to bring them into proper relation to each other before startingtheloom up after the same has been stopped for any reason. For example, inthe ordinary forms of ginghams or fancy looms the warps are controlledby means of a dobby cylinder or chain and the box-motion is controlledby an independent pattern-chain located at some distance from the dobby,and which can be turned back or shifted without affecting the dobby.When the loom is stoppedfor example, by theweft 'stop-motionupon theexhaustion of a shuttle-bobbin, it is now the practice of the weaver toturn back the dobby-cylinder one peg and then by an inde- 7o pendentoperation to turn back one peg on the pattern-chain which controls thebox-motion. A new shuttle can then be introduced and the loom againstarted in operation. -If, however, it should happen that the dobby- 7 5cylinder should be turned back one peg,while the pattern-chain whichcontrols the box-motion should be perhaps turned back two pegs or notturned at all, and the loom should then be started up, it would resultin the entire confusion of the pattern which is being produced by theloom.

The especial object of mypresent invention is therefore to provide abox-motion-operating attachment, which may be applied to the ordinarydobby-looms now employed in cot ton-weaving, so that the pattern chainsor mechanisms which control the weft or filling threads and the patternchains or mechanisms which control the warp-threads will move to- 0gether, so that when one pattern device or chain is advanced or turnedback the other chain will be correspondingly shifted; and my inventionconsists of a box-motion-operating device comprising a series of cams,lift- 5 ing-levers actuated thereby, hook-pieces connected to the cams,and actuating blades or sweeps arranged to be moved toward and away fromeach other.

The actuating blades or sweeps are preferwe ably moved in one directionby a cam and in the other direction by a spring. As thus constructed mydevice can be applied with comparatively little trouble to looms alreadyin use, and as the actuating-blades are preferably operated by a camitcan be readily timed to perform its function without interfering withthe operation of the other essential parts of the machine. The operatingsections or slots of the cams which actuate the liftinglevers are cut orshaped so that the liftinglevers will be locked when either in theirraised or lowered position.

Referring to the drawings and in detail, A designates one of the sideframes of a loom which may be of any ordinary or approved construction.J ournaled in the side frames A is a shaft 6, which may be driven in anyof the ordinary manners. Secured on the shaft eis a gear a, forming acrank-disk which, by means of the pitman f, is connected to operate thelevelers controlling the harness-motion. Also mounted on the shaft 6 isa bevelgear g, which meshes with and drives a bevelgear 72, secured upona vertical shaft 1', which shaft 1' may be provided with a worm meshingwith and driving a worm-wheel j. The worm-wheel j is loosely mounted onthe shaft of the dobby-cylinder l and is normally held in engagementwith a clutch k by means of a coiled spring, so that the dobby-cylinderZ can be turned by the hand-wheel m independently of its drivingconnections. These parts may be of any of the ordinary or approvedconstructions and need not be herein described at length.

Mounted on the dobby-cylinder Z isa main pattern-chain n, which controlsthe harnessmotion of the loom in the ordinary manner. Also mounted onthe dobby-cylinder 1, near the inner end thereof, is a second patterndevice or chain 10, which pattern-chain I employ for controlling in yboX-motion-actuatin g device. As illustrated, the pattern-chain 10cooperates with a plurality of fingers 16, three such fingers beingillustrated in the present instance. The fingers 16 are connected bymeans of lifting-wires 11 to hook-pieces 13, which are mounted in andform part of my box-operating mechanism 12. Bolted upon the face of thegear a is a face-cam 14, by means of which power will be applied to thebox-motion-operating device 12.

The construction of my boX-motion-operating device is most clearlyillustrated in Fig. 3. As shown, it comprises a bracket or framework 17which may be bolted or secured to anyconvenient part on the framework ofthe loom. Mounted on a stud 40 are pieces 35, having cam-slots 36.Fitting into the camslots 36 are rollers 38, journaled on links 37,which are connected at their upper end to the lifting-levers 19. Thelinks 37 are guided at their lower ends by slotted sections 39, engagingthe stud 40. Connected to the ends of the lifting-levers 19 areconnecting-pieces 20, adj ustably threaded into each of which is alifting-rod 15. The liftingrods extend down to that part of theframework of the loom ordinarily occupied by the box-motion, and saidlifting-rods may be connected at their lower ends either directly tooperate the boxmotion or any form of multiplying device now ordinarilyemployed in connection with boxmotions.

As shown most clearly in Fig. 4, the camslots 36 are shaped at theirends so that when the parts are in the position illustrated in Fig. 3the lifting-lever 19 will be locked in a raised position. Thehook-pieces 13, which connect to the pivoted pieces 35, are providedupon their upper edges with abutments 24 and on their lower edges withabutments 25. The hook-pieces 13 are held in place and guided by meansof a comb 23.

The actuating blades or sweeps 26 and 27 are carried by bell-cranklevers 28 and 29, the lower arms of the bell-crank levers beingconnected by means of a pin 30, extending from the bell-crank lever 28through a slot in the bell-crank lever 29. A coiled spring is connectedat its lower end to the pin 30 and normally acts to open or separate theactuating blades or sweeps 26 and 27, as shown in Fig. 3. J ournaled inthe bell-crank lever 29 in position to engage the face-cam 14, beforereferred to, is a friction-roll 34. \Vhen the cam 14 engages with andacts upon the friction-roll 34, the actuating blades or sweeps 2G and 27will be moved toward each other. When the cam 14 passes out ofengagement with the roll 34, the actuating blades or sweeps 26 and 27will be moved away from each other by the spring 32. When a peg on thepattern-chain 10 passes under one of the hooks 10, the hook 16 ,throu ghits lifter-wire 11,Wi1l lower a hookpiece 13 so as to bring its lowerabutment 25 into the path of the actuating blade or sweep 27. When theactuating blade or sweep 27 is shifted by the cam 14, it will move thehook piece 13 to the position illustrated in Fig. 3, thus lifting up thelifting-lever 19, which lifting-lever on account of the shape of thecamslot 36 will be locked in its raised position.

If at any time the loom is stopped on account of the giving out of theweft-thread or for any other reason, the operator can turn back oradvance the dobby cylinder Z by means of the hand-wheel m and thepatterir chains '11 and 10 will move together, so that they will alwaysmaintain a correct cooperative relation and the loom will always be incondition so that when started up it will correctly weave a pattern.

In my companion application, Serial No. 622,621, filed February 9, 1897,I have shown a box-motion-operating device in which the lifting-leversare actuated by means of togglelinks, and in such a construction theparts were arranged so that a peg on the chain controlling thebox-motion-operating device would cause a lifting-lever to be drawn downand a blank space on the pattern-chain would cause one of thelifting-levers to be raised.

When constructed according to my present invention, a riser or peg onthe pattern-chain will cause one of the lifting-levers to be raised anda blank space on the pattern-chain will cause one of the lifting-leversto be lowered. This construction I have found to be preferable inpractice, as there is less liability for mistakes to be made in makingup the pattern-chains. Moreover, by operating the lifting-levers bymeans of cams I have provided a motion in which the power can be applieduniformly to the lifting-levers during their entire movement.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent of the United States, is-

In a device of the class described, the combination of pivotedcam-pieces 35 having cam-' slots 36, links 37, each having a projectionengaging one of said cam-slots, said links 37 being guided at theirlower ends, lifting-levers 19 actuated by the links 37, the cam-slots 36being shaped to lock said lifting-levers in their raised position,hook-pieces 13, a pattern device controlling said hook-pieces, connectedbell-crank levers 28 and 29 having actuating-blades 26 and 27, a spring32 for normally separating said bell-crank levers, and a cam for movingsaid bell-crank levers toward each other, substantially as described.

In testimony whereof I have hereunto set my hand in the presence of twosubscribing witnesses.

JOHN F. DUSTIN.

Witnesses:

RALPH E. THOMSON, HARRY G. TOWNEND.

